Trace number 3096405

Some explanations

A solver is run under the control of another program named runsolver. runsolver is in charge of imposing the CPU time limit and the memory limit to the solver. It also monitors some information about the process. The trace of the execution of a solver is divided into four (or five) parts:
  1. SOLVER DATA
    This is the output of the solver (stdout and stderr).
    Note that some very long lines in this section may be truncated by your web browser ! In such a case, you may want to use the "Download as text" link to get the trace as a text file.

    When the --timestamp option is passed to the runsolver program, each line output by the solver is prepended with a timestamp which indicates at what time the line was output by the solver. Times are relative to the start of the program, given in seconds. The first timestamp (if present) is estimated CPU time. The last timestamp is wall clock time.

    As some 'v lines' may be very long (sometimes several megabytes), the 'v line' output by your solver may be split on several lines to help limit the size of the trace recorded in the database. In any case, the exact output of your solver is preserved in a trace file.
  2. VERIFIER DATA
    The output of the solver is piped to a verifier program which will search a value line "v " and, if found, will check that the given interpretation satisfies all constraints.
  3. CONVERSION SCRIPT DATA (Optionnal)
    When a conversion script is used, this section shows the messages that were output by the conversion script.
  4. WATCHER DATA
    This is the informations gathered by the runsolver program. It first prints the different limits. There's a first limit on CPU time set to X seconds (see the parameters in the trace). After this time has ellapsed, runsolver sends a SIGTERM and 2 seconds later a SIGKILL to the solver. For safety, there's also another limit set to X+30 seconds which will send a SIGXPU to the solver. The last limit is on the virtual memory used by the process (see the parameters in the trace).
    Every ten seconds, the runsolver process fetches the content of /proc/loadavg, /proc/pid/stat and /proc/pid/statm (see man proc) and prints it as raw data. This is only recorded in case we need to investigate the behaviour of a solver. The memory used by the solver (vsize) is also given every ten seconds.
    When the solver exits, runsolver prints some informations such as status and time. CPU usage is the ratio CPU Time/Real Time.
  5. LAUNCHER DATA
    These informations are related to the script which will launch the solver. The most important informations are the command line given to the solver, the md5sum of the different files and the dump of the /proc/cpuinfo and /proc/meminfo which provides some useful information on the computer.

Solver answer on this benchmark

Solver NameAnswerCPU timeWall clock time
MultiFlip 2011-02-11SAT 0.230964 0.231409

General information on the benchmark

Namerandom/medium/
unif-k3-r4.26-v700-c2982-S812011128-009.SATISFIABLE.cnf
MD5SUMafbdc7a317cd52b76c978398c2e877e2
Bench CategoryRANDOM (random instances)
Best result obtained on this benchmarkSAT
Best CPU time to get the best result obtained on this benchmark0.218965
Satisfiable
(Un)Satisfiability was proved
Number of variables700
Number of clauses2982
Sum of the clauses size8946
Maximum clause length3
Minimum clause length3
Number of clauses of size 10
Number of clauses of size 20
Number of clauses of size 32982
Number of clauses of size 40
Number of clauses of size 50
Number of clauses of size over 50

Solver Data 

0.19/0.23	c MultiFlip version 1.01 by Jingchao Chen,  Feb. 2011 
0.19/0.23	c input CNF file=HOME/instance-3096405-1301760848.cnf 
0.19/0.23	c var#=700 clause#=2982 
0.19/0.23	c clause#=2982 var#=700 ratio=4 
0.19/0.23	c Unsat#=         3 flip#=     16208 
0.19/0.23	c Unsat#=         2 flip#=     17883 
0.19/0.23	c Unsat#=         1 flip#=     56431 
0.19/0.23	c Unsat#=         0 flip#=    283123 
0.19/0.23	c try 1-th flip# 283123
0.19/0.23	c A solution is found
0.19/0.23	c verified 
0.19/0.23	s SATISFIABLE
0.19/0.23	v 1 -2 3 4 -5 -6 -7 -8 9 -10 11 12 -13 14 -15 16 -17 18 -19 -20 -21 22 -23 -24 -25 -26 -27 28 29 -30 -31 -32 -33 34 35 -36 37 38 -39 40 -41 -42 -43 -44 -45 -46 47 48 49 -50 -51 -52 53 54 -55 -56 57 58 -59 60 -61 -62 -63 64 -65 -66 -67 68 69 -70 71 -72 -73 -74 75 -76 77 -78 -79 80 -81 -82 -83 -84 -85 -86 87 88 89 90 -91 92 93 -94 95 -96 97 98 99 -100 101 102 -103 -104 105 -106 -107 -108 109 -110 -111 -112 -113 -114 -115 -116 117 118 -119 -120 121 -122 -123 124 125 126 -127 -128 129 130 -131 132 133 -134 -135 136 137 -138 -139 -140 -141 142 143 -144 -145 146 -147 -148 149 -150 151 -152 153 -154 155 -156 157 -158 -159 160 161 162 163 164 165 166 -167 -168 -169 170 171 172 -173 -174 175 176 177 178 179 180 -181 -182 183 184 185 -186 187 -188 189 -190 -191 -192 193 -194 195 196 -197 -198 199 200 -201 202 -203 204 -205 -206 207 -208 209 210 -211 212 213 -214 -215 216 217 218 -219 -220 221 222 -223 -224 225 -226 227 228 229 -230 231 -232 233 234 235 -236 237 -238 239 240 -241 242 -243 244 245 -246 -247 -248 -249 250 -251 252 253 254 -255 256 257 -258 259 260 261 262 263 264 -265 266 267 -268 -269 -270 -271 -272 273 -274 -275 -276 -277 -278 -279 280 -281 282 283 284 -285 286 -287 288 289 290 -291 292 -293 294 295 -296 297 -298 -299 300 -301 302 303 -304 305 -306 -307 308 -309 -310 311 -312 -313 -314 315 -316 317 -318 319 320 321 -322 323 -324 -325 -326 327 328 329 -330 331 -332 -333 -334 335 -336 -337 338 -339 -340 341 342 -343 344 -345 -346 347 -348 -349 350 351 -352 -353 -354 -355 356 357 358 -359 -360 -361 362 363 364 365 366 367 -368 -369 -370 -371 -372 -373 374 375 -376 -377 378 379 -380 381 -382 -383 -384 385 -386 387 -388 -389 390 -391 -392 393 394 395 -396 397 -398 399 400 401 -402 403 -404 405 406 -407 408 -409 410 -411 -412 413 414 -415 416 -417 418 -419 420 -421 -422 423 -424 425 426 427 -428 429 -430 431 432 433 434 -435 436 -437 -438 439 -440 441 -442 -443 444 -445 -446 -447 448 -449 -450 -451 -452 -453 -454 -455 -456 457 458 -459 460 -461 462 -463 464 465 -466 467 468 469 470 471 -472 -473 474 -475 -476 -477 478 479 -480 -481 -482 -483 -484 485 486 -487 -488 489 490 -491 492 -493 494 -495 -496 -497 498 -499 -500 501 502 503 -504 -505 506 -507 508 -509 -510 -511 -512 -513 514 -515 -516 517 -518 -519 520 -521 522 -523 -524 -525 526 527 528 529 530 531 532 533 534 535 536 537 -538 539 540 -541 -542 543 -544 545 -546 -547 548 549 550 -551 -552 -553 -554 555 556 -557 558 -559 -560 561 562 -563 -564 565 566 567 568 -569 -570 571 -572 -573 574 575 576 577 -578 -579 580 -581 -582 -583 584 -585 586 587 588 589 590 -591 592 593 -594 -595 -596 -597 598 599 -600 601 -602 603 604 -605 606 -607 -608 609 -610 611 -612 613 614 615 616 617 618 -619 620 621 622 623 624 625 626 627 628 -629 -630 -631 632 -633 634 -635 636 -637 -638 -639 -640 641 -642 -643 644 645 -646 647 -648 -649 650 651 652 653 -654 -655 656 -657 658 -659 -660 661 -662 -663 -664 -665 -666 -667 668 -669 670 671 672 673 -674 -675 -676 -677 678 679 -680 681 -682 683 684 685 -686 -687 688 -689 690 -691 692 693 -694 -695 -696 697 698 699 -700 
0.19/0.23	v 0
0.19/0.23	c Done (Running cputime is 0.223 seconds)

Verifier Data 

OK

Watcher Data 

runsolver Copyright (C) 2010 Olivier ROUSSEL

This is runsolver version 3.3.0 (svn: 893)

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

command line: BIN/runsolver --timestamp -w /tmp/evaluation-result-3096405-1301760848/watcher-3096405-1301760848 -o /tmp/evaluation-result-3096405-1301760848/solver-3096405-1301760848 -C 2400 -W 1300 -M 7680 MultiFlip HOME/instance-3096405-1301760848.cnf 

running on 2 cores: 1,3

Enforcing CPUTime limit (soft limit, will send SIGTERM then SIGKILL): 2400 seconds
Enforcing CPUTime limit (hard limit, will send SIGXCPU): 2430 seconds
Enforcing wall clock limit (soft limit, will send SIGTERM then SIGKILL): 1300 seconds
Enforcing VSIZE limit (soft limit, will send SIGTERM then SIGKILL): 7864320 KiB
Enforcing VSIZE limit (hard limit, stack expansion will fail with SIGSEGV, brk() and mmap() will return ENOMEM): 7915520 KiB
Current StackSize limit: 10240 KiB


[startup+0 s]
/proc/loadavg: 3.75 3.95 3.94 4/189 20236
/proc/meminfo: memFree=21851328/32951124 swapFree=67111528/67111528
[pid=20236] ppid=20234 vsize=2980 CPUtime=0 cores=1,3
/proc/20236/stat : 20236 (MultiFlip) R 20234 20236 19156 0 -1 4202496 358 0 0 0 0 0 0 0 25 0 1 0 268501020 3051520 297 33554432000 134512640 134540672 4289080320 18446744073709551615 134538621 0 0 4096 0 0 0 0 17 1 0 0 0
/proc/20236/statm: 745 297 217 7 0 102 0

[startup+0.104073 s]
/proc/loadavg: 3.75 3.95 3.94 4/189 20236
/proc/meminfo: memFree=21851328/32951124 swapFree=67111528/67111528
[pid=20236] ppid=20234 vsize=3112 CPUtime=0.1 cores=1,3
/proc/20236/stat : 20236 (MultiFlip) R 20234 20236 19156 0 -1 4202496 390 0 0 0 10 0 0 0 25 0 1 0 268501020 3186688 329 33554432000 134512640 134540672 4289080320 18446744073709551615 134523742 0 0 4096 0 0 0 0 17 1 0 0 0
/proc/20236/statm: 778 329 220 7 0 135 0
Current children cumulated CPU time (s) 0.1
Current children cumulated vsize (KiB) 3112

[startup+0.201055 s]
/proc/loadavg: 3.75 3.95 3.94 4/189 20236
/proc/meminfo: memFree=21851328/32951124 swapFree=67111528/67111528
[pid=20236] ppid=20234 vsize=3112 CPUtime=0.19 cores=1,3
/proc/20236/stat : 20236 (MultiFlip) R 20234 20236 19156 0 -1 4202496 390 0 0 0 19 0 0 0 25 0 1 0 268501020 3186688 329 33554432000 134512640 134540672 4289080320 18446744073709551615 134524205 0 0 4096 0 0 0 0 17 1 0 0 0
/proc/20236/statm: 778 329 220 7 0 135 0
Current children cumulated CPU time (s) 0.19
Current children cumulated vsize (KiB) 3112

Solver just ended. Dumping a history of the last processes samples

Child status: 10
Real time (s): 0.231409
CPU time (s): 0.230964
CPU user time (s): 0.228965
CPU system time (s): 0.001999
CPU usage (%): 99.8077
Max. virtual memory (cumulated for all children) (KiB): 3112

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 0.228965
system time used= 0.001999
maximum resident set size= 0
integral shared memory size= 0
integral unshared data size= 0
integral unshared stack size= 0
page reclaims= 413
page faults= 0
swaps= 0
block input operations= 0
block output operations= 0
messages sent= 0
messages received= 0
signals received= 0
voluntary context switches= 6
involuntary context switches= 3

runsolver used 0 second user time and 0.004999 second system time

The end

Launcher Data 

Begin job on node146 at 2011-04-02 18:14:08
IDJOB=3096405
IDBENCH=83087
IDSOLVER=1523
FILE ID=node146/3096405-1301760848
RUNJOBID= node146-1301756921-19176
PBS_JOBID= 12841068
Free space on /tmp= 72164 MiB

SOLVER NAME= MultiFlip 2011-02-11
BENCH NAME= SAT11/random/medium/unif-k3-r4.26-v700-c2982-S812011128-009.SATISFIABLE.cnf
COMMAND LINE= MultiFlip BENCHNAME
RUNSOLVER COMMAND LINE= BIN/runsolver --timestamp -w /tmp/evaluation-result-3096405-1301760848/watcher-3096405-1301760848 -o /tmp/evaluation-result-3096405-1301760848/solver-3096405-1301760848 -C 2400 -W 1300 -M 7680  MultiFlip HOME/instance-3096405-1301760848.cnf

TIME LIMIT= 2400 seconds
MEMORY LIMIT= 7680 MiB
NBCORE= 2

MD5SUM BENCH= afbdc7a317cd52b76c978398c2e877e2
RANDOM SEED=1389724108

node146.alineos.net Linux 2.6.18-164.el5 #1 SMP Thu Sep 3 03:28:30 EDT 2009

/proc/cpuinfo:
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 6
model		: 26
model name	: Intel(R) Xeon(R) CPU           X5550  @ 2.67GHz
stepping	: 5
cpu MHz		: 2666.830
cache size	: 8192 KB
physical id	: 0
siblings	: 4
core id		: 0
cpu cores	: 4
apicid		: 0
fpu		: yes
fpu_exception	: yes
cpuid level	: 11
wp		: yes
flags		: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm syscall nx rdtscp lm constant_tsc ida nonstop_tsc pni monitor ds_cpl vmx est tm2 cx16 xtpr popcnt lahf_lm
bogomips	: 5333.66
clflush size	: 64
cache_alignment	: 64
address sizes	: 40 bits physical, 48 bits virtual
power management: [8]

processor	: 1
vendor_id	: GenuineIntel
cpu family	: 6
model		: 26
model name	: Intel(R) Xeon(R) CPU           X5550  @ 2.67GHz
stepping	: 5
cpu MHz		: 2666.830
cache size	: 8192 KB
physical id	: 1
siblings	: 4
core id		: 0
cpu cores	: 4
apicid		: 16
fpu		: yes
fpu_exception	: yes
cpuid level	: 11
wp		: yes
flags		: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm syscall nx rdtscp lm constant_tsc ida nonstop_tsc pni monitor ds_cpl vmx est tm2 cx16 xtpr popcnt lahf_lm
bogomips	: 5332.75
clflush size	: 64
cache_alignment	: 64
address sizes	: 40 bits physical, 48 bits virtual
power management: [8]

processor	: 2
vendor_id	: GenuineIntel
cpu family	: 6
model		: 26
model name	: Intel(R) Xeon(R) CPU           X5550  @ 2.67GHz
stepping	: 5
cpu MHz		: 2666.830
cache size	: 8192 KB
physical id	: 0
siblings	: 4
core id		: 1
cpu cores	: 4
apicid		: 2
fpu		: yes
fpu_exception	: yes
cpuid level	: 11
wp		: yes
flags		: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm syscall nx rdtscp lm constant_tsc ida nonstop_tsc pni monitor ds_cpl vmx est tm2 cx16 xtpr popcnt lahf_lm
bogomips	: 5332.75
clflush size	: 64
cache_alignment	: 64
address sizes	: 40 bits physical, 48 bits virtual
power management: [8]

processor	: 3
vendor_id	: GenuineIntel
cpu family	: 6
model		: 26
model name	: Intel(R) Xeon(R) CPU           X5550  @ 2.67GHz
stepping	: 5
cpu MHz		: 2666.830
cache size	: 8192 KB
physical id	: 1
siblings	: 4
core id		: 1
cpu cores	: 4
apicid		: 18
fpu		: yes
fpu_exception	: yes
cpuid level	: 11
wp		: yes
flags		: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm syscall nx rdtscp lm constant_tsc ida nonstop_tsc pni monitor ds_cpl vmx est tm2 cx16 xtpr popcnt lahf_lm
bogomips	: 5332.86
clflush size	: 64
cache_alignment	: 64
address sizes	: 40 bits physical, 48 bits virtual
power management: [8]

processor	: 4
vendor_id	: GenuineIntel
cpu family	: 6
model		: 26
model name	: Intel(R) Xeon(R) CPU           X5550  @ 2.67GHz
stepping	: 5
cpu MHz		: 2666.830
cache size	: 8192 KB
physical id	: 0
siblings	: 4
core id		: 2
cpu cores	: 4
apicid		: 4
fpu		: yes
fpu_exception	: yes
cpuid level	: 11
wp		: yes
flags		: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm syscall nx rdtscp lm constant_tsc ida nonstop_tsc pni monitor ds_cpl vmx est tm2 cx16 xtpr popcnt lahf_lm
bogomips	: 5332.75
clflush size	: 64
cache_alignment	: 64
address sizes	: 40 bits physical, 48 bits virtual
power management: [8]

processor	: 5
vendor_id	: GenuineIntel
cpu family	: 6
model		: 26
model name	: Intel(R) Xeon(R) CPU           X5550  @ 2.67GHz
stepping	: 5
cpu MHz		: 2666.830
cache size	: 8192 KB
physical id	: 1
siblings	: 4
core id		: 2
cpu cores	: 4
apicid		: 20
fpu		: yes
fpu_exception	: yes
cpuid level	: 11
wp		: yes
flags		: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm syscall nx rdtscp lm constant_tsc ida nonstop_tsc pni monitor ds_cpl vmx est tm2 cx16 xtpr popcnt lahf_lm
bogomips	: 5332.75
clflush size	: 64
cache_alignment	: 64
address sizes	: 40 bits physical, 48 bits virtual
power management: [8]

processor	: 6
vendor_id	: GenuineIntel
cpu family	: 6
model		: 26
model name	: Intel(R) Xeon(R) CPU           X5550  @ 2.67GHz
stepping	: 5
cpu MHz		: 2666.830
cache size	: 8192 KB
physical id	: 0
siblings	: 4
core id		: 3
cpu cores	: 4
apicid		: 6
fpu		: yes
fpu_exception	: yes
cpuid level	: 11
wp		: yes
flags		: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm syscall nx rdtscp lm constant_tsc ida nonstop_tsc pni monitor ds_cpl vmx est tm2 cx16 xtpr popcnt lahf_lm
bogomips	: 5332.75
clflush size	: 64
cache_alignment	: 64
address sizes	: 40 bits physical, 48 bits virtual
power management: [8]

processor	: 7
vendor_id	: GenuineIntel
cpu family	: 6
model		: 26
model name	: Intel(R) Xeon(R) CPU           X5550  @ 2.67GHz
stepping	: 5
cpu MHz		: 2666.830
cache size	: 8192 KB
physical id	: 1
siblings	: 4
core id		: 3
cpu cores	: 4
apicid		: 22
fpu		: yes
fpu_exception	: yes
cpuid level	: 11
wp		: yes
flags		: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm syscall nx rdtscp lm constant_tsc ida nonstop_tsc pni monitor ds_cpl vmx est tm2 cx16 xtpr popcnt lahf_lm
bogomips	: 5332.75
clflush size	: 64
cache_alignment	: 64
address sizes	: 40 bits physical, 48 bits virtual
power management: [8]


/proc/meminfo:
MemTotal:     32951124 kB
MemFree:      21851608 kB
Buffers:        348608 kB
Cached:       10431340 kB
SwapCached:          0 kB
Active:        7100844 kB
Inactive:      3746772 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:     32951124 kB
LowFree:      21851608 kB
SwapTotal:    67111528 kB
SwapFree:     67111528 kB
Dirty:             976 kB
Writeback:           0 kB
AnonPages:       67800 kB
Mapped:          16152 kB
Slab:           189524 kB
PageTables:       5260 kB
NFS_Unstable:        0 kB
Bounce:              0 kB
CommitLimit:  83587088 kB
Committed_AS:   249088 kB
VmallocTotal: 34359738367 kB
VmallocUsed:    296008 kB
VmallocChunk: 34359440975 kB
HugePages_Total:     0
HugePages_Free:      0
HugePages_Rsvd:      0
Hugepagesize:     2048 kB

Free space on /tmp at the end= 72164 MiB
End job on node146 at 2011-04-02 18:14:08